USS Dynamic (AFDL-6)

Evidence

16 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-16).

1. [1]NAVSEA, Mid-Atlantic Regional Maintenance Center (MARMC), 'MARMC Field Activities' page - 'Field Activity: DYNAMIC (AFDL 6)' section (official U.S. Navy command page) [other_primary]

   Locator

   MARMC Field Activities page, 'Field Activity: DYNAMIC (AFDL 6)' block - mission statement, milestone table, 1962 tow narrative, design-intent and current-status paragraphs; commanding-officer biography block (LCDR assuming command September 2023)

   Finding type

   vessel_history

   Finding

   The official NAVSEA/MARMC command page (MARMC Field Activities) records this dock as a MARMC subordinate command providing 'dry-docking services for PC, LCU, MCM, MHC, yard tug, Army LCM, and other small vessels ISO Homeland Security and Amphibious Readiness,' and fixes the build and career milestones: 'DYNAMIC (AFDL-6) was built by the Chicago Bridge and Iron Company, Eureka, California. Keel Laid: 03 Sep 1943; Launched: 22 Feb 1944; Completed: 11 Mar 1944. Upon commissioning, DYNAMIC was assigned to Commander Destroyer Squadron EIGHT as USS AFDL-6 in San Diego, CA. In April 1962, DYNAMIC was deactivated, and in August 1962, reactivated for transfer to Little Creek, VA. On 5 September 1962, DYNAMIC was towed by USS CHICSAW (ATF-83) to the Panama Canal for further transfer to Little Creek by USS SHAKOR (ATF-162) on 23 September 1962. DYNAMIC arrived at Little Creek on 01 October 1962, and presently operates under Naval Surface Force Atlantic, Readiness Support Group, Norfolk, Virginia.' The page further describes the type's advanced-base design intent ('self-sufficient in that it carries its own source of power, supplies and provisions as well as providing for ship repair services') and her current status: 'Presently DYNAMIC operates as a shore dependent dock, providing regular and emergency docking availability, and sandblasting services for Commander, Naval Surface Force Atlantic operating units and various support craft.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   1943-1962 milestones; mission description current

   Population

   Dock crews, San Diego 1944-1962; tow crews CHICSAW/SHAKORI 1962; Little Creek dock crews 1962-present

   Limitations

   Authoritative U.S. Navy command record retrieved via search index and cached snippets - the page itself returned HTTP 403 to direct fetch all session (standing navsea.navy.mil bot defense), so wording is verified from indexed text rather than a clean page pull. The page anachronistically calls her 'USS AFDL-6' 'upon commissioning' - she commissioned as AFD-6 and the AFDL designation dates to 1946; the command page uses the current designation retroactively. Contains no asbestos, materials, or environmental information.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-01

2. [2]Ships' Data, U.S. Naval Vessels, 1945, Volume III (NAVSHIPS 250-012), Floating Dry Dock Characteristics table, p. 607 - AFD6 row (Google Books scan mirrored at shipscribe.com) [other_primary]

   Locator

   p. 607, Floating Dry Dock Characteristics - Continued table; 'NavRepbase, San Diego, Calif.' location group rows AFD1-AFD6/AFD8-AFD11 read directly from the page scan (PDF page 625)

   Finding type

   vessel_history

   Finding

   The official Navy tabulation lists this dock in the Floating Dry Dock Characteristics table: 'AFD6' appears grouped at 'NavRepbase, San Diego, Calif.' (with AFD1-AFD5 and AFD8-AFD11), type '1-piece, steel' (the AFD1 row spelling out the type the 'do.' dittos inherit), nominal lifted capacity 1,000 tons, suitable for docking 'YN, AM' (yard net tenders and minesweepers), length overall 200 ft, length on pontoon blocks 185 ft, width overall molded 64 ft, width clear inside 45 ft, draft over blocks 14 ft 6 in, maximum submerged draft 27 ft, light draft 3 ft 5 in, construction begun 1943 / completed 1944. This fixes her wartime station and establishes her as a standard 200-ft AFD - not one of the five lengthened (288-ft, 1,900-ton) docks tabulated separately at Curtis Bay and Seattle.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   1945

   Population

   Dock operating crew and ships' companies of docked YN/AM craft, NavRepbase San Diego

   Limitations

   Official 1945 tabulation read directly from the page scan - establishes wartime designation (AFD6), station (NavRepbase San Diego), and characteristics. Note the capacity nuance: the table gives 1,000 tons for this standard dock; NavSource's '1,900 tons' spec-block figure conflicts and is not supported (see ev-15). No asbestos information in the source.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-02

3. [3]NavSource Naval History, Service Ship Photo Archive, 'Dynamic (AFDL-6)' page (09/28/2849.htm, last updated 2015-01-09) [other_primary]

   Locator

   NavSource 09/28/2849.htm - chronology block, specifications block, ribbon list, officer-in-charge table, image caption set

   Finding type

   vessel_history

   Finding

   NavSource dedicated page 'Dynamic (AFDL-6), ex USS AFD-6 (1944-1946)' (09/28/2849.htm, a substitute-number page since 2806/6706 are in use) supplies the chronology: laid down (date unknown) at Chicago Bridge and Iron Co., Eureka, CA; 'Delivered and Commissioned, USS AFD-6, 1 March 1944'; 'Decommissioned and placed in service, date unknown'; 'Redesignated AFDL-6, 1 August 1946'; 'Named Dynamic, date unknown'; 'Current Disposition, in service at NAB Little Creek, VA.' Ribbon list: Secretary of the Navy Letter of Commendation; American Campaign Medal; World War II Victory Medal; National Defense Service Medal (3). Radio call sign NHTW. Officer-in-charge list: CAPT Harold Herman Tiemroth USN (to June 1951), CAPT William Page Burford USN (June 1951-May 1952 and June 1952-1953, Tiemroth briefly returning May-June 1952). U.S. Navy photos document her in service circa 1970s (including USS Green Bay PG-101 docked) and on 2006-11-02 at Virginia Beach (photo series 061102-N-4238B). The page states explicitly: 'There is no DANFS history available for USS AFD-6 / Dynamic (AFDL-6).'

   Verification

   partial

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   1943-2025

   Population

   Dock crews 1944-present; crews of docked craft

   Limitations

   NavSource is a reputable volunteer specialist archive, not a primary record - its chronology is consistent with the official MARMC milestones where they overlap (builder, Eureka; 1946-08-01 redesignation; Little Creek service) and its photo captions carry verifiable Navy photo numbers. Its spec block is internally inconsistent (200 ft length with '1,900 tons' lift - the lengthened-dock figure; official table gives 1,000 tons, see ev-02/ev-15), and 'Delivered and Commissioned ... 1 March 1944' conflicts by ten days with the official 'Completed: 11 Mar 1944' milestone (carried in gaps). Captain-ranked officers-in-charge 1950-53 are noted without a stated crew size. No asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-03

4. [4]Bureau of Yards and Docks, 'Building the Navy's Bases in World War II' (U.S. Navy, 1947), Chapter IX, Floating Drydocks (HyperWar/ibiblio transcription) [other_primary]

   Locator

   Chapter IX, 'Types of Floating Drydocks' glossary - 'Auxiliary Floating Dock' and 'Auxiliary Floating Dock, Lengthened' sections and the 1946 reclassification paragraph

   Finding type

   vessel_history

   Finding

   The official Bureau of Yards and Docks history defines the type: AFDs were 'mobile, military, steel trough type, unit dock[s], with faired bow and stern, of 1,000 tons lifting capacity' - 200 ft long, 64 ft wide, 45 ft clear inside the wing walls, welded steel, 'fully self-contained, with diesel electric power plants' and limited repair facilities, intended for minesweepers, patrol craft, and similar vessels. The 1946 nomenclature revision folded all AFDs into 'AFDL' (Little, under 10,000 tons) - the 1946-08-01 redesignation this hull carries in NavSource. The lengthened variant (five AFDs given an 88-ft midbody to 288 ft / 1,900 tons for the destroyer-escort program) is a separate set; this hull is in the standard group per the Ships' Data tabulation (ev-02).

   Verification

   verified

   Role

   context

   Documentation level

   class_or_era

   Accessed

   2026-09-20

   Study period

   1941-1946

   Population

   Construction trades at contractor plants; dock crews (type context)

   Limitations

   Class/design history, not a hull record - the BuDocks history does not name this dock; its application here is via the Ships' Data tabulation placing AFD6 in the standard-dock group (ev-02). No asbestos information in the source.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-04

5. [5]U.S. Navy news release, 'Navy's Oldest Floating Dry Dock Passes Material Inspection' (navy.mil Press-Office article 2240023, ~2019-11); text verified via Norfolk Navy Flagship (militarynews.com) republication [other_primary]

   Locator

   navy.mil article 2240023 (canonical URL returned HTTP 403 to direct fetch - content verified via the Norfolk Navy Flagship republication at militarynews.com, article_62b0c3e0-151a-11ea, and search-index text; INSURV photo caption dated Oct. 21)

   Finding type

   vessel_history

   Finding

   Official U.S. Navy news coverage documents the dock's 2019 material inspection and superlative status: 'the crew of the Mid-Atlantic Regional Maintenance Center's (MARMC) Floating Dry-Dock Dynamic (AFDL 6) recently passed a material inspection by the Navy's Board of Inspection and Survey (INSURV), certifying the dock as materially ready and safe for continued use.' INSURV docking testing occurred at JEB Little Creek-Fort Story on 2019-10-21 (photo caption). 'For the past 75 years, Dynamic has served as an auxiliary floating dry dock, capable of lifting ships out of the water for inspections and repairs. The dock was delivered to the U.S. Navy March 11, 1944, and with the exception of USS Constitution, is the oldest active vessel in the fleet.' Preparation 'included a seven-month maintenance availability that included ultrasonic testing, tank inspections, and equipment preservations and repairs... successfully completed in house by Dynamic's 28 Sailors and MARMC's Quality Assurance and Production teams,' with Port Operations barge and crane support. MARMC CO Capt. Tim Barney: 'Keeping a World War II era craft mission capable has its challenges. INSURV just validated that MARMC and Dynamic were not just up for that challenge, but that they excelled.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   2019 (availability and inspection)

   Population

   Dynamic's 28-sailor crew; MARMC QA and Production teams; INSURV inspectors

   Limitations

   Official Navy release, verified through a same-text military-news republication plus search index (the canonical navy.mil URL 403s to automated fetch - flagged, not silently swapped). Documents a material inspection and availability, not hazmat scope: ultrasonic testing, tank inspections, equipment preservation and repairs are named; no asbestos, insulation, or abatement information appears. The 'oldest active vessel' framing is the release's own and excludes USS Constitution; she is a service craft, and 'vessel/in commission' usage varies across official copy.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-05

6. [6]U.S. Navy press release, 'The Navy's Second Oldest Vessel Changes Command' (navy.mil Press-Office article 2934998, ~2022-02); DVIDS news 403027, 'In a First, Floating Dry-Dock Dynamic Docks Port Operations Work Boats' (2021-08-10) [other_primary]

   Locator

   navy.mil article 2934998 (canonical URL 403s to direct fetch - content verified via search index); https://www.dvidshub.net/news/403027/first-floating-dry-dock-dynamic-docks-port-operations-work-boats

   Finding type

   vessel_history

   Finding

   Official U.S. Navy press release documents her unique status and 2021 operating tempo: 'The Navy's only operational floating dry dock, Dynamic (AFDL 6), changed command Jan. 28 when Lt. Cmdr. Alden Argante relieved Lt. Cmdr. Gaston Hatfield Jr.' at MARMC. 'Dynamic has been in service 78 years, and it has been the only Navy operated AFDL in commission since 2011. The single rigid piece, through-type floating dry-dock is capable of docking Mine Countermeasure (MCM) and Patrol Coastal (PC) ships, Landing Craft Utility (LCU) and similar sized service crafts. It is ported at Joint Expeditionary Base Little Creek-Fort Story.' Under Hatfield the crew executed 18 dockings - a 300 percent year-over-year increase - 'including the first double docking of port operations medium work boats and the first dive boat docking.' Companion DVIDS coverage dates the first double docking of Port Operations work boats to 2021-08-10 (and a first dive-boat docking that April), quoting crewmember IC1 Nicholas Carey: 'Dynamic has been around nearly 80 years and continues to evolve to fit the Navy's maintenance needs.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   2021-2022

   Population

   Dynamic crew under Hatfield/Argante; Port Operations work-boat crews; MARMC staff

   Limitations

   Official Navy release verified through search-index text (canonical navy.mil URL 403s to automated fetch) plus a DVIDS companion story fetched in full. Documents operating tempo and command detail, not materials or hazmat. The 'in commission since 2011' phrasing is the release's framing for service-craft status - it describes continuous operation, not a 2011 commissioning event.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-06

7. [7]SAM.gov award notice N5005422C0002 (via HigherGov contract record) + WorkBoat/Marine Log award coverage; DVIDS news 422030 'MARMC's Dynamic Prepares For Major Overhaul' and photos 7250012/7250021 (VIRIN 220517-N-HD161) [other_primary]

   Locator

   HigherGov award record for N5005422C0002 (award ID, value $16,365,770, dates, codes, awardee Lyon Shipyard); DVIDS 422030 body text and photo captions; workboat.com and marinelog.com award stories

   Finding type

   vessel_history

   Finding

   The 2022-23 overhaul is documented at contract level: SAM award N5005422C0002 (solicitation N5005421R0009), 'DYNAMIC (AFDL-6) AND BARGE (YFND-30),' a competitive firm-fixed-price small-business award of $16,365,770 to Lyon Shipyard Inc., Norfolk VA (award date 2022-02-10, posted 2022-02-18; NAICS 336611 Ship Building and Repairing; PSC J998 Non-Nuclear Ship Repair East; MARMC contracting activity) 'to manage and execute all maintenance, repair, and alterations required to complete the drydocked phased maintenance availability onboard the USS Dynamic (AFDL-6) and barge (YFND-30)' - two offers received. DVIDS coverage (news 422030, photo series 220517-N-HD161) documents the 2022-05-17 tow of Dynamic and companion living barge YFND 30 from JEBLCFS to Lyons Shipyard, with MARMC project manager Marvin Daughtry scoping the work: 'upgrades to the ballast control system, fire pumps, rail system, and tanks and undergo structural repairs... the automation system... a complete overhaul of all the living quarters... This is going to be a full overhaul.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   2022-02-10 award; 2022-05-17 tow; availability through 2023

   Population

   Lyon Shipyard contract workforce; Dynamic crew during tow and refit; NAVFAC Mid-Atlantic and MARMC Waterfront Operations personnel

   Limitations

   Contract-level documentation of a commercial-yard availability on this hull - the closest the public record comes to a hazmat-relevant event on a 1944 craft, and no public portion of the award record or coverage states an asbestos or abatement scope (the published scope is ballast control, fire pumps, rail system, tanks, structure, automation, living quarters). The SAM record is carried via the HigherGov aggregator and trade press, not the raw SAM.gov page; amounts and identifiers are consistent across all three. Trade press says 'USS Dynamic' loosely - she is a service craft. No asbestos information in any of these sources.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-07

8. [8]DVIDS news 463879, 'Navy's Oldest Floating Dry Dock, Dynamic, Resumes Operations After 20 Months' (Harrison Cox / SSgt Danielle Lofton, MARMC; story dated 2024-01-30, posted 2024-02-14) [other_primary]

   Locator

   DVIDS 463879 story body and photo caption (public domain; fetched in full)

   Finding type

   vessel_history

   Finding

   Official DVIDS coverage (MARMC release, posted 2024-02-14) documents her return to service: 'the Navy's oldest floating dry dock... successfully completed its first dry-docking for Landing Craft Utility (LCU) 1645 at Joint Expeditionary Base Little Creek-Fort Story (JEBLCFS), Jan. 30' [2024] - 'the first docking in over 20 months, following a 13-month Dry-docking Phased Maintenance Availability (DPMA) undergone by Dynamic and her companion living barge, the unnamed YFND 30. The $20 million project involved 15 major ship alterations and two major projects completed by the Naval Facilities Engineering Systems Command (NAVFAC).' CO Lt. Cmdr. Johnny Stevenson on the signature alteration: 'One of the biggest installs we had on Dynamic was the electronic ballast control console. Before the avail, we were operating the ballast manually, down in the plant. With the new system we now have onboard, the dock master, along with the ballast control officer, can now fully ballast, dock and undock Dynamic using that control console.' 'The single rigid piece, through-type floating dry dock will celebrate its 80th year this March,' capable of docking MCM, PC, LCU, and similar-sized service craft.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   2022-2024

   Population

   Dynamic crew under Stevenson; LCU 1645 crew; MARMC shops; NAVFAC project teams

   Limitations

   Official MARMC release - documents the DPMA completion, cost, and alteration count but not its hazmat scope; the alterations named are control systems and barge upgrades. The '$20 million project' figure is broader than the $16.37M Lyon award (it includes NAVFAC projects and the barge), and the '13-month DPMA / 20-month stand-down' arithmetic is consistent with the 2022-05-17 tow and the 2024-01-30 return. No asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-08

9. [9]DVIDS news 544355, 'Dynamic Supports Cost-Saving Maintenance Evolution for ACU-2 Craft' (MARMC release, posted 2025-08); DVIDS image 9229431 'AFDL-6 (DYNAMIC) SUPPORTS ACU-2 DOCKING EVOLUTION' [other_primary]

   Locator

   DVIDS 544355 story body (public domain, via search index and page); image record 9229431

   Finding type

   vessel_history

   Finding

   Official DVIDS coverage documents her in active service through mid-2025: on 2025-06-03 the dock 'successfully completed a docking and undocking evolution for Landing Craft Utility (LCU) 1654, assigned to Assault Craft Unit (ACU) 2 at Joint Expeditionary Base Little Creek-Fort Story' - an emergent docking executed within 72-hour notice (vs. a typical 10-day process), providing shore power, low-pressure air, welding support, crane operations, security, and environmental mitigation while LCU 1654's crew performed a full-jacket water system flush on two main propulsion engines and three Ship Service Diesel Generators, welding repairs to KORT nozzles, and replacement of both waterborne shaft sections; ~$124,400 saved versus commercial dry dock alternatives. CO Lt. Cmdr. Jeremy Mayfield. Companion photo record (DVIDS image 9229431, VIRIN 241126-N-JC439-1001).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-20

   Study period

   2025

   Population

   Dynamic crew under Mayfield; LCU 1654 crew; ACU-2 personnel

   Limitations

   Most recent located official coverage - establishes she is still in service performing dockings as of June 2025. The companion image record's 'Date Taken: 11.25.2024' conflicts with the story's 2025-06-03 evolution date (the photo VIRIN is Nov 2024) - the story date is treated as authoritative for the event and the photo-record discrepancy is noted here, not resolved. Documents services provided to a docked craft; no asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-dynamic-afdl6-09

10. [10]Wineland v. Air & Liquid Sys. Corp., 539 F. Supp. 3d 1149 (W.D. Wash. 2021), Cause No. C19-0793RSL (order granting Crane Co.'s motion for summary judgment, Dkt. 304, decided 2021-05-17) - via vLex case-law republication and signed-order PDFs; companion orders cited within [court_record]

    Locator

    search_ledger rows sl-uss-dynamic-afdl6-10 through sl-uss-dynamic-afdl6-12; published order 539 F. Supp. 3d 1149; Alfa Laval signed order Dkt. 313 vessel/date list ('USS DYNAMIC (1963-1966)')

    Finding type

    litigation_documented

    Finding

    Litigation and name-collision sweep: CourtListener API v4 queries for 'AFDL-6'/'AFD-6'/'USS Dynamic' were blocked (HTTP 429, shared 125/day quota, ~15-hour reset at query time) and deferred per the backoff rule; web-indexed court-record sweeps returned one case naming the vessel - Wineland v. Air & Liquid Systems Corp., 539 F. Supp. 3d 1149 (W.D. Wash. 2021), Cause No. C19-0793RSL (Judge Lasnik), a mesothelioma wrongful-death case in which decedent John Dale Wineland's pleaded service history ran 'USS DYNAMIC (1963-1966), USS PLEDGE (1966-1967), USS LOYALTY (1970-1972), USS TUSCALOOSA (1972-1974), and USS ESTEEM (1978-1980)' with engine-room machinery repair. CLASSIFIED AS NAME COLLISION - the reference attaches to the minesweeper USS Dynamic (AM-432/MSO-432), a Pacific Fleet ship (Long Beach), not this dock: every other ship in the service history is Pacific Fleet (MSO-492, MSO-457, LST-1187, MSO-438), the forum and the decedent's shipyard employment are Puget Sound, and this dock had been at Little Creek, VA since 1962-10-01; her naming date is unknown, and if it followed the verified 1979-06-07 sister-dock naming action, 'Dynamic' was not yet her name during 1963-66. Even on the minesweeper, the case is a merits-level negative for that plaintiff: the district court granted summary judgment to every moving defendant on causation grounds (Crane Co. order, 539 F. Supp. 3d 1149, Dkt. 304; companion orders for Puget Sound Commerce Center/Todd 523 F. Supp. 3d 1245, Alfa Laval Dkt. 313, Carrier Dkt. 427, Robertshaw Dkt. 311, Anchor/Darling Dkt. 309). No case naming AFD-6 or AFDL-6 was located by any instrument used.

    Verification

    partial

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-09-20

    Study period

    2026-09-20 sweep; underlying litigation 2019-2021

    Limitations

    Sweep partially blocked - the live CourtListener API quota was exhausted before any query ran (~15 h reset), so no fresh docket-level search was possible; the web-indexed sweep is a weaker instrument and RECAP-level pleading checks were not run. The Wineland classification rests on service-pattern analysis (Pacific Fleet ships, Puget Sound forum, this dock's Atlantic station since Oct 1962), not on an express hull identifier in the opinion - plaintiffs' filings say only 'USS DYNAMIC'; the inference is strong but is an inference, and it classifies DOWN per batch rule. The orders are merits-level negatives for that plaintiff regardless of which vessel was meant - they are not exposure evidence for any hull. Absence of a located pleading naming AFD-6/AFDL-6 is not proof none ever existed.

    Atlas source

    true

    Evidence ID

    ev-uss-dynamic-afdl6-10

11. [11]Batch-604 search ledger (this record): NAVSEA MARMC page; Ships' Data 1945 p. 607; NavSource 09/28/2849.htm; navy.mil 2240023/2934998; DVIDS 403027/422030/463879/544355 + images; SAM N5005422C0002 via HigherGov/trade press; NARA ship index + SL-44; shipbuildinghistory auxafd; web-indexed litigation sweeps [other_primary]

    Locator

    search_ledger rows sl-uss-dynamic-afdl6-01 through sl-uss-dynamic-afdl6-18

    Finding type

    historical_record

    Finding

    No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, materials schedule, hazmat disclosure, or docketed case naming AFD-6/AFDL-6/Dynamic was found in the public sources searched - the NAVSEA/MARMC command page, the Ships' Data 1945 tabulation, the NavSource page, the navy.mil INSURV and command-change stories, the SAM award record N5005422C0002, the DVIDS coverage (403027, 422030, 463879, 544355), the NARA indexes, and the shipbuildinghistory table contain no asbestos or insulation-material statement. The 2022-23 DPMA - a documented $16.4M-$20M commercial-yard overhaul of this 1944 hull touching machinery, tanks, structure, and living quarters - is the likeliest located event to have produced an abatement record; none of its public coverage states an asbestos scope.

    Verification

    verified

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-09-20

    Study period

    2026-09-20

    Limitations

    Absence of a located public record does not prove absence of asbestos aboard - a 1943-44 self-contained Navy dock with diesel-electric machinery, repair shops, and crew accommodations is era-consistent with retained asbestos-containing materials, and unusually for this registry the hull still works in federal service: any retained material persists under active Navy maintenance whose work packages (including the DPMA job order) are not public. Does not establish presence or absence; does not establish or defeat any exposure claim or legal eligibility.

    Atlas source

    true

    Evidence ID

    ev-uss-dynamic-afdl6-11

12. [12]Bureau of Yards and Docks, 'Building the Navy's Bases in World War II,' Ch. IX (design description of the AFD type); station and mission records per ev-01, ev-02, ev-06, ev-09; era asbestos framing per Corn & Starr (ev-13) [other_primary]

    Locator

    Chapter IX, 'Auxiliary Floating Dock' paragraph (diesel-electric power plants, self-contained, limited repair facilities)

    Finding type

    asbestos_application

    Finding

    Class/era inference only: the standard AFD design carried a diesel-electric power plant, ballast/pumping machinery, limited repair shops, and crew accommodations within a welded-steel trough dock built 1943-44 for the U.S. Navy - a period when Navy construction specifications and supply routinely included asbestos-containing gaskets, packing, electrical insulation, millboard, and thermal insulation for machinery and piping. The dock's repair mission - first on yard net tenders and minesweepers at San Diego (1944-1962), then on Atlantic Fleet small combatants at Little Creek (MCM/MHC/PC/LCU/YTB and Army LCM to the present, including sandblasting services) - placed its crews around hull-insulation suites that commonly contained asbestos across the whole working life of the craft.

    Verification

    inferred

    Role

    supporting

    Documentation level

    class_or_era

    Accessed

    2026-09-20

    Study period

    1943-1946 construction era; occupational pathway through service life

    Population

    Construction trades (Eureka, 1943-44); dock operating crews 1944-present; Lyon Shipyard and NAVFAC workers 2022-23; crews of vessels under repair

    Limitations

    Design-level inference, not a hull record - the BuDocks history does not mention asbestos and does not name this dock. Asbestos presence aboard AFDL-6 is inferred from era construction practice and onboard machinery, not proven; a non-propelled floating dock had a far smaller machinery and inhabited-space footprint than a steam vessel, and its asbestos loading would correspondingly be lower. The documented 2022-23 wholesale modernization (ballast plant, pumps, tanks, living quarters) and the 1962 reactivation cut both ways on survival - original equipment was replaced in undocumented scope. Establishes nothing about quantity, condition, present-day presence, individual exposure, or causation.

    Atlas source

    true

    Evidence ID

    ev-uss-dynamic-afdl6-12

13. [13]Corn, Jacqueline Karnell, and Jennifer Starr, 'Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding,' American Journal of Industrial Medicine 11(3):359-373 (1987) [other_primary]

    Locator

    Abstract and article, AJIM 11(3):359-373

    Finding type

    asbestos_application

    Finding

    Peer-reviewed historical study documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during WWII - the program and era under which this Navy-contracted floating dock was built - with wartime demand driving unprecedented asbestos utilization aboard government and contract hulls.

    Verification

    verified

    Role

    context

    Documentation level

    class_or_era

    Accessed

    2026-09-20

    Study period

    1940s era documented; article 1987

    Population

    WWII shipyard workers and vessel crews (class context)

    Limitations

    Program/era-level scholarly documentation of asbestos use in WWII shipbuilding generally; does not name this dock, does not address floating drydocks specifically, and does not establish that asbestos was or remains aboard this hull, nor quantity, location, condition, exposure, or causation.

    Atlas source

    true

    Evidence ID

    ev-uss-dynamic-afdl6-13

14. [14]NARA Ship Plan Index (archives.gov/research/cartographic/ship-index), entry 'AFDL-6 | 385 | Microfilm | 63531026'; NARA Special List 44 by Ship Numbers (AFD block absence verified by direct read of sl-44-ship-number.pdf) [other_primary]

    Locator

    Ship Plan Index AFDL-6 line (one entry); sl-44-ship-number.pdf AFD/AFDL block - no AFD-6 or AFDL-6 rows

    Finding type

    historical_record

    Finding

    Archival leads (not retrieved - record-holding mapping only): (a) NARA cartographic Ship Plan Index holds ONE plan entry for 'AFDL-6' on microfilm roll 385, identifier 63531026 - potential materials/machinery-layout source; (b) NARA Special List 44 (ship-number list) contains NO deck logs for AFD-6 or AFDL-6 (the AFD block runs AFD-15/-18/-19/-20/-21/-25/-26/-27/-28/-29/-30 plus AFDL-21/-29/-32) - wartime log holdings for this hull are absent from the list, a verified absence rather than an unsearched lead; (c) the DPMA contract file (N5005422C0002, Lyon Shipyard) and its NAVFAC job orders would document the hazmat scope of the 2022-23 overhaul; (d) the INSURV material-inspection report is not public; (e) BuShips/BuSandA contract records for the Chicago Bridge & Iron AFD contracts would document builder assignment and could resolve the Eureka/Morgan City discrepancy.

    Verification

    unverified

    Role

    archival_lead

    Documentation level

    context_only

    Accessed

    2026-09-20

    Study period

    1943-2024 records

    Limitations

    Record-holding mapping only - no document-level retrieval performed (no reproduction spend authorized). Whether the microfilm plan or the DPMA/INSURV/contract files contain asbestos-specific information for this dock is unknown until surveyed. The SL-44 absence is itself a verified finding - do not list these deck logs as a pending lead. Nothing in this row is an asbestos finding.

    Atlas source

    true

    Evidence ID

    ev-uss-dynamic-afdl6-14

15. [15]NAVSEA MARMC Field Activities page; NavSource 09/28/2849.htm; shipbuildinghistory.com auxafd table and CB&I yard page (chicagobridge.htm); Marine Log 'Lyon Shipyard to drydock a dry dock'; Lost Coast Outpost Humboldt CB&I yard history [other_primary]

    Locator

    auxafd.htm AFDL-6 row ('Chicago Bridge | Morgan City LA') vs. MARMC/NavSource/Marine Log Eureka attestations; CB&I yard list (AFD 6 delivered 2/1944); lostcoastoutpost.com Eureka yard history (18 docks, 1942-46); NavSource spec block vs. Ships' Data p. 607

    Finding type

    historical_record

    Finding

    Source-discrepancy corrections on this hull: (1) BUILDER LOCATION - the official MARMC page, NavSource, and Marine Log all give Chicago Bridge and Iron Co., Eureka, CA; the shipbuildinghistory AFDL table lists the same builder at Morgan City, LA (and applies Morgan City to the whole AFDL 1-11 block while it separately attributes AFDM/YFD hulls to Eureka). The CB&I Eureka yard is independently documented as a purpose-selected Navy floating-dock plant (18 docks/sections built on Humboldt Bay 1942-1946 per the Humboldt County historical record). Eureka is carried as the better-attested location; Morgan City is logged, not merged. (2) DELIVERY DATE - NavSource 'Delivered and Commissioned, USS AFD-6, 1 March 1944' vs. official MARMC 'Completed: 11 Mar 1944' and navy.mil 'delivered March 11, 1944'; the ten-day discrepancy is flagged, not resolved (commissioned vs. completed/delivered milestones may legitimately differ). (3) LIFTING CAPACITY - NavSource's spec block gives '1,900 tons,' the lengthened-dock figure, inconsistent with the official Ships' Data tabulation's 1,000 tons for this standard 200-ft dock; the official figure controls.

    Verification

    partial

    Role

    correction

    Documentation level

    ship_specific

    Accessed

    2026-09-20

    Study period

    1943-1945 records; secondary-source era ongoing

    Limitations

    Corrects propagating secondary-source figures against the official records. The shipbuildinghistory table self-describes drydock builder attribution as incomplete, but it does distinguish Eureka-built AFDM/YFD hulls - so its Morgan City assignment for the AFDL block is not obviously a blanket error; the BuShips contract record is the lead that would settle it (ev-14). NavSource spec blocks are demonstrably inconsistent across AFDL pages (same defect noted in the batch-583 record for AFDL-22), so capacity rests on the official tabulation. None of these items is an asbestos finding.

    Atlas source

    true

    Evidence ID

    ev-uss-dynamic-afdl6-15

16. [16]Lost Coast Outpost (Humboldt County news), 'Humboldt History: Eureka's Biggest Contribution to the War Effort Was a Massive Bayfront Shipyard That Built Floating Dry Docks' (2026-08-01), drawing on the Humboldt Historian and the Clarke Museum's WWII memorial record [reputable_press]

    Locator

    Article body - BuDocks site selection, yard location/extent, production totals; corroborated by the shipbuildinghistory CB&I yard page noting Eureka-built sectional dry docks and the Clarke Museum WWII memorial summary

    Finding type

    vessel_history

    Finding

    The builder yard is independently documented as a Navy floating-dock plant: Chicago Bridge & Iron operated a ~60-acre yard at the foot of Washington Street on Humboldt Bay, Eureka, from 1942 to 1946, selected by the Bureau of Yards and Docks for floating dry dock construction because 'it had the harbor and the necessary labor force'; the yard turned out '18 complete floating dry docks or dry dock sections, and six floating crane barges' for Pacific service, employing more than 7,000 workers over five years.

    Verification

    partial

    Role

    supporting

    Documentation level

    ship_specific

    Accessed

    2026-09-20

    Study period

    1942-1946

    Population

    CB&I Eureka yard workforce (>7,000 over five years)

    Limitations

    Local-history journalism documenting the yard's existence and output - it does not list this hull by number and does not settle the Eureka/Morgan City attribution by itself (the 18-dock Eureka output is consistent with but does not prove this dock's build site). Relevant to the construction-trades population only insofar as it confirms a large wartime CB&I Eureka workforce. No asbestos information.

    Atlas source

    true

    Evidence ID

    ev-uss-dynamic-afdl6-16